 | BERG & WIGUM AS | 929425677 | TRONDHEIM |
| BERKNES MASKIN AS | 951243639 | VOLDA |
| BERKON AS | 816349982 | ØYGARDEN |
| BERLAND BYGG AS | 966596252 | BERGEN |
| BERLAND ELEKTRO AS | 925536830 | ASKØY |
| BERLEVÅG RØR AS | 917797285 | BERLEVÅG |
| BERNHARD OLSEN AS | 959424616 | RANA |
| BERNT DAHL BYGGTJENESTER AS | 926820826 | NAMSOS |
| BERNT GUNDERSEN GRAVESERVICE AS | 981701275 | ÅSNES |
| BERNTSEN & BERNTSEN PROSJEKT AS | 875800582 | BERGEN |
| BERNTSEN BYGGSERVICE AS | 989810685 | TROMSØ |
| BERNTSEN MUR OG FLISESERVICE AS | 982145651 | ØYGARDEN |
| BERNTSEN PLAN & OPPMÅLING AS | 897819422 | RINGERIKE |
| BERRE ENTREPRENØR AS | 929992504 | NAMSOS |
| BERSTAD VÅPENØYA | 919251980 | INDRE FOSEN |
| BERTELSEN & GARPESTAD AS | 939015159 | EIGERSUND |
| BERTHELSEN BYGG AS | 925738964 | KRISTIANSAND |
| BERTHELSEN & VU AS | 915677908 | BERGEN |
| BERTHEUSSEN BLIKKENSLAGER AS | 990019398 | SØRREISA |
| BERTIL JOHNSEN AS | 976895215 | TANA |
| BESIKT AS | 987037024 | HARSTAD |
| BESI MUR OG GRAVING AS | 925293202 | NORDRE FOLLO |
| BESLAG OG BALKONGER AS | 980387968 | ASKØY |
| BESSEGGEN ARKITEKTER AS | 925252492 | OSLO |
| BESSELING JB BYGG OG BETONG | 922639523 | NORD-FRON |
| BEST-BYGG AS | 992548517 | GJEMNES |
| BESTELAND MUR OG FLIS AS | 998069696 | VALLE |
| BEST-HALL OY | 984706235 | |
| BEST HÅNDVERK AS | 915583040 | PORSGRUNN |
| BETA VVS AS | 924454946 | OSLO |
| BETO BYGG AS | 968403249 | OSLO |
| BETONGARBEID AS | 812016482 | OSLO |
| BETONG CONSULT AS | 943847878 | BERGEN |
| BETONGENTREPRENØREN AS | 913159462 | BJØRNAFJORDEN |
| BETONGENTREPRENØREN SUNDT & MORSTØL AS | 997475240 | BERGEN |
| BETONGGULV AS | 928928799 | BJØRNAFJORDEN |
| BETONGHUS ANS | 983741770 | ÅLESUND |
| BETONG KARLSEN AS | 915719589 | DRAMMEN |
| BETONGKOMPANIET AS | 925623415 | SARPSBORG |
| BETONG OG MUR AS | 929382064 | TØNSBERG |
| BETONGPARK AS | 999269648 | OSLO |
| BETONGSERVICE HAUGESUND AS | 997091124 | HAUGESUND |
| BETONG TECH AS | 996709590 | ÅLESUND |
| BETONG & TRE AS | 977352762 | SARPSBORG |
| BETONMA REHABILITERING AS | 917882274 | NORDRE FOLLO |
| BETONMAST ASKER OG BÆRUM AS | 882064352 | BÆRUM |
| BETONMAST INNLANDET AS | 985232644 | GJØVIK |
| BETONMAST ØSTFOLD AS | 993110906 | SARPSBORG |
| BETONMAST ROMERIKE AS | 993925314 | LILLESTRØM |
| BETONMAST RØSAND AS | 918510532 | AVERØY |